What does U0 mean?

This code indicates a potential issue with the amount of refrigerant in the system. Low refrigerant can affect cooling or heating performance.

• Low refrigerant level
• Leak in the refrigerant system

Click steps to track your progress.

1. 1

   Ensure the system has adequate refrigerant. If low, a leak may need to be found and repaired by a professional.

2. 2

   Check for any visible signs of refrigerant leaks around the indoor and outdoor units.

3. 3

   Consult a qualified technician to inspect and service the refrigerant levels.